P2B94Wastegate Position Sensor B Exceeded Learning Limit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2B94 is set when the learned end position of electric wastegate B falls outside the window the engine computer accepts. Stellantis documents it on the 2025 Ram 1500 with the 3.0L Hurricane twin-turbo: bulletin 09-008-25 (Rev. B) lists P2B94 together with P0248 and a MIL, with weak turbo response, caused by wastegate rod retention clips installed incorrectly at the factory. The fix is to measure the clips with a caliper and replace any that exceed 13.70 mm on the actuator side or 17.78 mm on the housing side. Ford's patent US9243553B2 explains the principle behind the learn step: the controller moves the valve against a mechanical stop and stores the sensor value there, so play in the linkage moves the learned point. Side A uses P2B93.
- What you may notice
- MIL on, often together with P0248
- Lack of acceleration from the turbo
- Likely causes
- LikelyWastegate rod retention clips incorrectly installed (Stellantis 09-008-25)
- PossiblePlay or bending in the wastegate B linkage
- RareCharger or actuator B replaced without completed relearn
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.